1967.0000000;-0.2192498
1968.0000000;0.5117862
1969.0000000;-1.4005556
1970.0000000;-0.6263559
1971.0000000;-1.3526820
1972.0000000;-0.7824373
1973.0000000;-1.0840054
1974.0000000;-0.9987673
1975.0000000;-0.0503020
1976.0000000;-1.5147283
1977.0000000;0.6577551
1978.0000000;0.5889640
1979.0000000;-0.0051147
1980.0000000;0.8387696
1981.0000000;0.3956353
1982.0000000;0.0377385
1983.0000000;0.0947200
1984.0000000;1.2210199
1985.0000000;1.0221100
1986.0000000;-1.6096463
1987.0000000;0.6070778
1988.0000000;0.4101675
1989.0000000;-1.1283991
1990.0000000;-1.7955625
1991.0000000;-1.5438774
1992.0000000;-1.2192818
1993.0000000;-0.5135726
1994.0000000;-0.0338187
1995.0000000;1.1305906
1996.0000000;-0.3698877
1997.0000000;-0.7936924
1998.0000000;-1.8589312
1999.0000000;-0.3785840
2000.0000000;-1.0399780
2001.0000000;0.9366968
2002.0000000;-1.3263948
2003.0000000;-2.7636616
2004.0000000;-1.6642618
2005.0000000;-2.1770520
2006.0000000;-1.1398947
2007.0000000;-0.6411871
2008.0000000;-1.5512282
2009.0000000;-2.9769073
2010.0000000;-1.0896194
2011.0000000;-2.6144068
2012.0000000;-2.4734457
2013.0000000;-0.6828022
2014.0000000;-0.9159302
2015.0000000;-2.3568830